Arrangement for steering a ship and for supplying power to its propulsion system

A propulsion system and component technology, applied in the direction of propulsion-based emission reduction, ship propulsion, propulsion components, etc., to achieve the effect of improving hydrodynamic efficiency

Inactive Publication Date: 2013-10-09
ABB AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the overall energy consumption and electricity generation must be as efficient as possible

Method used

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  • Arrangement for steering a ship and for supplying power to its propulsion system

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Embodiment Construction

[0014] figure 1 A schematic diagram of an embodiment of the invention is shown. A CRP (Contra-rotating Propeller) propulsion assembly 4 is installed in the aft part of the vessel 2 . The CRP propulsion assembly includes a forward propeller 44 and an aft propeller 48 arranged to rotate in opposite directions as is well known to those skilled in the art. The main rotary power unit 40 , for example a two-stroke diesel engine, drives a propulsion power AC generator 42 , the rotor of which is fastened to an output shaft of the rotary power unit 40 . The main propeller 44 of the vessel is fastened to another output shaft 46 of the rotary power unit 40 . Although in figure 1 In the embodiment shown in , the generator 42 and the propeller 44 are on opposite sides of the rotating power unit 40 , but the generator could also be on the same side of the rotating power unit 40 as the propeller 44 . Opposite the main propeller 44 is arranged a second propeller 48 which is fixed to the o...

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Abstract

Arrangement for steering and supplying propulsion power to a contra rotating propellers (CRP) propulsion system in a marine vessel, which arrangement comprises a first propeller (44) driven by a rotating power unit (40) and a second propeller (48) driven by an AC motor (50) whereby the second propeller (48) is rotated in the opposite direction as the first propeller (44), and an AC generator (42) coupled to mechanical output shaft of the power unit (40) and driven by a rotating power unit, whereby the AC generator (42) is electrically connected to the AC motor (50). According the arrangement the AC motor (50) and the AC generator (42) have the same electrical frequency, another electrical power source (60,61,62) is electrically connectable to the AC motor (50) parallel to the AC generator (42), the shaft (47) of the second propeller is mounted rotatable in a support structure (16,24) which is attached to a hull of the marine vessel (2), and a rudder (10), which is supported in a manner allowing pivotal movement of the rudder (10) relative to the support structure (16, 24).

Description

technical field [0001] The present invention relates to an assembly for steering and supplying propulsion power to a contra-rotating propeller (CRP) propulsion system in a vessel. Background technique [0002] The propulsion power of a large ship or ship is generated by a rotating power unit, and the energy source of the rotating power unit is oil, natural gas, nuclear power. The rotating power unit may be a diesel engine, a gas turbine, or a nuclear power reactor rotating turbine. The mechanical output shaft is coupled directly or through gears to the shaft of the propeller, or the rotating power unit drives a generator which supplies electrical power to the boat's propeller motor. Furthermore, several different combinations of these two main ways of driving propellers have been used. [0003] The power and energy efficiency of ships requires that propulsion power be generated as economically as possible in the different operating modes. The total energy consumption shou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H5/10B63H23/24
CPCB63H23/24B63H5/10B63H21/17Y02T70/5236
Inventor K.科克基拉
Owner ABB AS
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